Smoke-consumer



(No Model.) T. LYMAN.-

I SMOKE-CONSUMER. No. 497,330. Patented May 16, 1893.

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witness: inventor:

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THOMAS LYMAN, OF BLOOMINGTON, ILLINOIS.

SMOKE-CONSUMER.

SPECIFICATION forming part of Letters Patent No. 497,330, dated May 16, 1893.

Application filed llovemher 12,

To all whom it may concern:

Be it known that I, THOMAS LYMAN, a citizen of the United States of America, residing at Bloomington, in the county of McLean and State of Illinois, have invented certain new and useful Improvements in Smoke-Consumers, of which the following is a specifica: tion, reference being had therein to the accompanying drawings and the letters of reference marked thereon, forming a part of this specification, in which- Figure 1 is a front view of the breeching arranged on the forward end of a horizontal steam boiler, showing a section of the chimney leading from said breeching, and having a portion broken away to show the parts within, and showing the smoke conducting pipe the chimney to'the combustion chamber below the forward end of the boiler. Fig. 2 is a side view of said breeching and a cross section of the chimney leading therefrom, aside View of the forward end of the boiler above the brick wall inclosing and supporting said boiler and a side view of the pipe leading from the chimney to the combustion chamber below the boiler. Fig. 3 is a perspective view of a -T pipe arranged in the chimney forward of the bell mouthed ends of the pipes leading to the combustion chamber, for admitting cold air to said pipes, and Figs. 4 and 5 are perspective views showing in detail the construction of the discharge end of the pipe leading from the chimney to the combustion chamber.

This invention relates to certain improvements in smoke consumers intended to be used in connection with the combustion chamber and chimney of either a stationary engine or locomotive and adapted to conduct the smoke and gases from the chimney back to the combustion chamber to be consumed, and thus prevent the thick black smoke from escaping from the chimney out into the open air, which improvements are fully set forth and explained in the following specification and claims.

Referring to the drawings P represents a section of an ordinary tubular steam boiler having a breeching B arranged on its forward end provided with a chimney A, and

supported in the brick wall to, and having an ordinary combustion chamber under its 1892- Serial No. 451,737. (No model.)

forward end, and provided with ordinary grate bars G shown in broken lines in Fig. 2,10- cated so as to form an ash pit or chamber below said grates.

B, B, are a pair of pipes arranged to have their upper bell shaped ends located within the chimney A, and faced toward the lower end of the chimney to intercept the draft, and having their opposite tapered ends discharge into the upper bell mouthed end of pipe D leading to and across the front of the combustion chamber, and having the nozzles v" for entering into the front part of the combustion chamber above the grates G as shown in Fig. 2.

g is a steam pipe leading from the dome of the boiler to the upper bell mouthed end of pipe D between the lower ends of the pipes B, B, said steam pipe having a valve '0 for controlling passage of steam through it, and the said bell mouthed end of pipe D being closed except for admission of said pipes B and g. l I

E is a branch'pipe leading from pipe D -from a point central with the combustion chamber down to a point below the grate bars G where it enters through the front wall of the ash pit or chamber below the grate bars, and is provided with a cross T pipe F into which it opens, as shown in Fig. 2, the said T pipe being provided with aseries of perforations o, as shown more particularly in Fig. 5. The said pipe E is also provided with a valve 11 for regulating the passage of smoke and gases through it to the chamber below the grate bars.

The chimney A is provided with a cold air inlet pipe 6 terminating at its inner end within the chimney in the cross T pipe n having the longitudinal slot S arranged facing the bell mouthed upper ends of the pipes B, B, so that cold air may be discharged into the pipes B, B, from said slot S. The said pipe eisprovided with a valve 0 for controlling the passage of cold air through it.

Cb, and d are dampers arranged within the chimney for deflecting the smoke and gases to the pipes B, B. When the fire is first lighted, and it is draft as possible when the fire is first starting, it is intended to turn said dampers to a horizontal position, or in a position parallel desired to have as much with the length of the chimney as shown in broken lines in Fig. 1,but after the fire is well started and it is desired to conduct the smoke and gases backto the combustion chamber through pipes B, D E, F, the said dampers a and (Z are turned as shown in full lines in said figure to direct the smoke and gases in the direction substantially as shown by the arrows in said figure, so that most of the smoke and gases will enter the bell mouths of pipes B B. These dampers are necessary as the smoke will naturally trail along the upper wall of the chimney, and needs to be diverted from its course as'stated.

A steam pipe V leads from the dome of the steam boiler to the upper end of pipe D between the ends of pipes B, B, as hereinbefore stated for the purpose of admitting a steam blast to cause a suction from the chimney through pipes B, B, and to drive the smoke and gases into the combustion chamber both above and below the grate bars.

The use of the air inlet pipe 6 and slotted cross T pipe 11 is for admitting atmospheric air to the pipes B B to be mixed with the smoke and gases to facilitate their combustion in the combustion chamber, the air becoming superheated before it reaches the combustion chamber and thus rendering said smoke and gases more susceptible to combustion than when not intermixed with heated atmospheric air.

The object of using the two pipes B. B. and having the steam blast located between their discharge ends and in close proximity thereto is, that it is found that the suction from the chimney is comparatively greater when the suction blast is arranged between them, than when the suction blast is used with only one pipe and is much more even and steady.

It is intended that the ash pit or chamber below the grate bars shall have no other inlet for draft than the perforated pipe F which admits only superheated atmospheric air intermixed with the smoke and gases, and that the smoke and gases from said pipe F will all be consumed by passing up between the grate bars G and. the live fire on them, and that the smoke and gases admitted to the combustion chamber above the grate bars from pipe D will be consumed by the flame from the fire above the grate.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is as follows, to wit:

1. In a smoke consumer the combination of the chimney A having the dampers a and (Z, cold air inlet pipe e having a valve 0, and having the T pipe or, provided with the slot S, bell mouthed pipes B. B., bell mouthed pipe D for receiving the outer ends of pipes B. B. and arranged to extend across the forward part of the combustion chamber and having inlet pipes or nipples r for entering said chamber above the grate bars, pipe E having one end open into pipe D,

and its opposite end extending into the ash pit or chamber below the grate bars, and having the cross T pipe F provided with a series of perforations 0, and the steam pipe 9 leading from the boiler to pipe D between pipes B. B. all arranged to operate substantially as and for the purpose set forth.

2. In a smoke consumer in combination with a chimney and a combustion chamber, a pair of hell mouthed pipes located within the chimneyand having their bell mouths facing the draft, deflecting dampers located within the chimney for deflecting the smoke and gases to said bell mouthed pipes, a pipe for receiving the opposite outerends of said bell mouthed pipes and extending to and across the front of the combustion chamber and having a series of exit pipes leadinginto the combustion chamber above the grate bars, a perforated pipe arranged below said grate bars and across the forward part of the chamber below said bars and connected by means of a pipe with the pipeleading to the chimney and a steam blast pipe leading from the pipes connected with the chimney to a steam supply all arranged to operate substantially as and for the purpose set forth.

3. In a smoke consumer the combination of the chimney A having the dampers a and cl, cold air inlet pipe 6 having valve 0 and having the cross T pipe 72 having the longitudinal slot S, bell mouthed pipes B. B. pipe D for receiving the outer ends of pipes B. B. and leading to the combustion chamber and the steam blast pipe 9 for enteringpipe D be tween pipes B. B. all arranged to operate substantially as and for the purpose set forth.

4. In a smoke consumer the combination of the chimney A, bell mouthed pipes B. B. bell mouthed pipeD for receiving pipes B. B. at its upper end and having its opposite end extend across the forward part of the combustion chamber above the grate bars and having a series of outlets r extending into the combustion chamber above the grate bars, the perforated pipe F located in the chamber below the grate bars and connected with pipe D by means of pipe E having a valve 2', and the steam blast pipe 9 for entering pipe D and creating a draft from the chimney to the combustion chamber all arranged to operate substantially as and for the purpose set forth.

5. In a smoke consumer the combination of the chimney A, the two bell mouthed pipes B. B. located in the chimney facing the draft the pipe D having a bell mouthed upper end for receiving the outer ends of pipes B. B. and the steam blast pipe g having its discharge end enter pipe I) between pipes B. B. substantially as and for the purpose set forth.

THOMAS LYMAN. lVitnesses:

lnos. H. IIUToHINs, RAY Hummus. 

